UL standard In UL standard, the common temperature resistance grades are 60 ℃, 70 ℃, 80 ℃, 90 ℃, 105 ℃, 125 ℃ and 150 ℃. How do these temperature ratings come? Is it the long-term operating temperature of the conductor? In fact, these so-called temperature ratings are called rating temperature in UL standards. It … Read more
The power cable industry is a large pillar industry in China. The production process needs high production standards, and maintains the safe operation of the whole industrial system. Therefore, the majority of power cable manufacturers need to conduct a very strict audit and purchase of cable production materials. The following will introduce the problems of … Read more
01 Plastic insulated conductor 1. Purpose: This product is suitable for fixed laying of power plant with AC rated voltage of 450 / 750V and below. 2. Product standard: GB 5023-95 AAC Cables (wires) for fixed laying of PVC insulated cables (wires) with rated voltage of 450 / 750V and below 3. Features: 1) rated … Read more
Often hear AAC Cable practitioners complain: it is too difficult to sell national standard. You say you are national standard, and those who sell non-standard also say that he is national standard. As a result, the price is more than 10% cheaper than yours, so it is helpless. Here, we will review and summarize the … Read more
(1) Being struck by lightning. Most of the high and low voltage lines of power transformers are introduced by overhead cables. Because they are located in mountainous forests, the probability of lightning strikes is high. Therefore, during the thunderstorm season each year, the proportion of distribution transformers damaged by lightning strikes accounts for more than … Read more
Copper bar is the main raw material of AAC Cable industry. There are two main production methods: continuous casting, continuous rolling and continuous casting. Due to different processes, the oxygen content and appearance of copper rods are also different. When the oxygen content is lower than 10ppm, it is called oxygen free copper rod; When … Read more
Breakdown refers to the damage of the original insulation function caused by external force damage, (extrusion, lightning stroke, etc.) of the insulation layer, aging of insulation data, etc., and the original insulation function is lost. During the operation of the AAC Cable, the core wire is discharged from the core to the core wire, the … Read more
Based on the large demand of medium and low voltage Cable Manufactor in China, the manufacturing level and equipment level of cable industry, the new product technology and the gap with the international advanced level, the following suggestions are put forward for the follow-up development: One is the standard of medium and low voltage power … Read more
Extrusion process is an indispensable part in cable manufactor, which includes insulation and sheath production process. Insulation production methods include coating, winding, extruding and their combination. Now the main insulation production is coating (winding wire, no longer in the scope of production license management) and extrusion (wire and cable). 1、 Plastic extrusion equipment and mould … Read more
Today’s copper price CCMN spot copper price: 73750 yuan / ton, down 0 yuan / ton Import demand may be weak, copper may rise or fall Limited Abstract: the employment index of the United States was weak in May. The copper price fell by 36 US dollars overnight. The copper strike in Chile had limited … Read more